[asterisk-users] Sip dynamic host question

[Ale]

Hi all,

My asterisk box have some peers with as host the name of a dynamic dns 
resolver ex: foo.dyndns.org.

All works fine, until the host foo.dyndns.org for some reason change his 
ip, asterisk didn't resolve again the new ip until a "sip relolad"

Actually, i use a cron with a bash script to track the ip and eventually 
  reload the sip.conf.

Any tips for Asterisk ? Something like externrefresh for a peer?

Thanks,
Alessandro